Radiation has seeped into vegetables, raw milk, the water supply and seawater since a magnitude-9 quake and killer tsunami crippled the Fukushima Dai-ichi power plant nearly two weeks ago. Broccoli was added to a list of tainted vegetables Wednesday, and U.S. officials announced a block on Japanese dairy and other produce from the region.

The crisis is emerging as the world's most expensive natural disaster on record, likely to cost up to $309 billion, according to a government estimate Wednesday. The death toll continued to creep up, with more than 9,400 bodies counted and more than 14,700 people listed as missing.

Concerns about food safety spread Wednesday to Tokyo after officials said tap water showed elevated levels: 210 becquerels per liter of iodine-131 — more than twice the recommended limit of 100 becquerels per liter for infants."